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waste management

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by

Joen Bulandos

on 6 September 2012

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Transcript of waste management

Garbage Problem Solid Waste Each household generates garbage or waste day in and day out. Items that we no longer need or do not have any further use for fall in the category of waste, and we tend to throw them away Types of Solid waste Household Waste Industrial Waste Biomedical Waste consists of household waste, construction and demolition debris, sanitation residue, and waste from streets. This garbage is generated mainly from residential and commercial complexes Industrial and hospital waste is considered hazardous as they may contain toxic substances. is generated during the diagnosis, treatment, or immunization of human beings or animals or in research activities in these fields or in the production or testing of biological Composting a biological process in which micro-organisms, mainly fungi and bacteria, convert degradable organic waste into humus like substance Vermi-Composting In this method, worms are added to the compost. These help to break the waste and the added excreta of the worms makes the compost very rich in nutrients. Benefits of Composting It supplies part of the 16 essential elements needed by the plants.
It helps reduce the adverse effects of excessive alkalinity, acidity, or the excessive use of chemical fertilizer.
It makes soil easier to cultivate. It helps keep the soil cool in summer and warm in winter.
It aids in preventing soil erosion by keeping the soil covered.
It helps in controlling the growth of weeds in the garden. Ocean Dumping It is the dumping or placing of materials in designated places in the ocean, often on the continental shelf.
Dumping involves depositing all the waste materials from factories & industries, tankers & ships & sewerage waste materials into the oceans. Materials involve in Ocean Dumping Garbage Sewage Sludge Construction & Demolition debris Dredge Material Waste Chemical Bilge water Health Risks from Ocean Dumping 1. Occupational accidents, injuries & exposures 2.Exposure of the public to hazardous or toxic materials washed up on beaches 3.Human consumption of marine organisms that have been contaminated by ocean disposal. Pacific Ocean Garbage Patch Is a gyre of marine litter in the Central North Pacific ocean. The patch’s characterized by exceptionally high of pelagic plastics, chemical sludge, & other debris that have been trapped by the currents of the North Pacific Gyre. Landfill A landfill site (also known as tip, dump or rubbish dump and historically as a midden) is a site for the disposal of waste materials by burial and is the oldest form of waste treatment. Types Of LandFill Sanitary Landfill landfill that uses a clay liner to isolate the trash from the environment Municipal solid waste landfills uses a synthetic (plastic) liner to isolate the trash from the environment. Construction and demolition waste landfills consist of the debris generated during the construction, renovation, and demolition of buildings, roads, and bridges. Industrial Waste Landfills nonhazardous solid waste consists of nonhazardous waste associated with manufacturing and other industrial activities. Landfill Advantages 1. A specific location for disposal that can be monitored. 2• When a landfill is complete, it can be reclaimed, built on or used as parks or farming land. 3• Waste going to properly designed landfills can be processed to remove all recyclable materials before tipping. 4• Waste going to properly designed landfills can be processed to remove organic material and use it for compost or natural gas (methane) production. 5• Properly managed landfills can capture the natural gas (methane) produced by the decomposing material underground. 6• Properly managed landfills can minimize and/or capture the leach ate produced by the decomposing material underground. Landfill Disadvantages and Problems 1. Landfills and the surrounding areas are often heavily polluted. 2• Landfill can pollute the water, the air, and also the soil. 3• It is difficult to keep dangerous chemicals from leaching out into the surrounding land. 4• Dangerous chemicals can spread into the water table or into waterways. 5• Landfill can attract animals and insects to come such as raccoons, rats, mosquitoes, cockroaches, and seagulls. 6• Landfill can also cause sicknesses, illnesses, and diseases which might spread in communities. 6• Landfill can increase the chances of global warming by releasing methane, a dangerous greenhouse gas. 7• Landfills are taking up lots of our land and that can also take away habitats for other animals. Landfill decomposition 1st phase:
aerobic phase 3rd phase
methane gas is produced 2nd phase
anaerobic phase Landfill - Recycling method of reducing the costs of solid waste disposal in landfills and of solving the problem of finding suitable landfill sites, many communities have initiated recycling programs Landfill - Composting composting of organic materials for reuse in gardening and in agriculture can help alleviate the problem of using land to dispose of waste material The End Created by:
Caintoy, Kristine Joy
Bugayong, Annie
Bulandos, Jeanine
Cantuba, Shenamae
Cenino, Nicole Angelica
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